Mold for making building bricks or blocks.



No. 771,519. l PATENTED 00124, 1904. T. W. WORRALL.

MOLD IO-R MAKING BUILDING BRICK'S 0R BLOCKS.

APPLICATION FILED NOV. l0, 1903.

N0 MODEL.

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5 i NV@ @a I Q 1in D @j l M '-I-lu QD (f-Mh x illli mi a2 f 1- ha.: Q am|I u IV No. 771,519. PATENTEI) OCT. 4, 1904.

I T. W. WORRALL.

MOLD FOR MAKING BUILDING BRICKS 0R BLOCKS.

APPLICATION FILED Nov.1o,19oa. y No MODEL. 2 SHEETS-SHEET z.

n .alli a j WITNESSES [NYE/(70H UNITED y STATES THOMAS W. WORRALL, OFNEW YORK, N. Y.

MOLD FOR MAKING BUILDING BRICKS OR BLOCKS.

SPECIFICATION forming part of Letters Patent No. 771,519, dated October4, 1904.

Application filed November l0, 1903. Serial No. 180,514.

To all whom t may concern:

Be it known that I, THoMAs W. WoRRALL, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Moldsfor MakingBuilding Bricks or Blocks, of which the following is a specification,such as willv enable those skilled in the art to which it appertains tomake and use the same.

his invention relates to molds for making building bricks or blocksdesigned to be faced either separately or in a wall by facings connectedtherewith by means of locking-keys formed on the facings and recessesformed in `the bricks or vblocks and adapted to receive said keys, allas shown and described in an ap,- plication for Letters Patent preparedand filed by me of equal date herewith and entitled Building bricks orblocks and facings therefor, and the invention consists, primarily, in amold or molds of the class specified constructed as` hereinafterdescribed and claimed and, secondarily, in means for operating saidmolds.

The invention is fully disclosed in the following specilication, ofwhich the accompanying drawings form a part, in which the separate partsof my improvement are designated by suitable reference characters ineach of the views, and in which` Figure l is a sectional side viewshowinga mold or molds for making building bricks or blocks madeaccording to my invention and a machine for operating said molds; Fig. 2a plan view of the construction shown in Fig. l with part thereof brokenaway, and Fig. 3 a perspective view of a part of the mold or molds shownin Fig. l and showing the parts detached and partially in section.

In the practice of my invention I provide a mold comprising in the formof construction shown a boX portion a, which in the form of constructionshown is provided with two compartments c2, and these compartments areformed by side walls c3l and end walls ai. The compartments c2 are openat the top and bottom and provided at the bottom with inwardlydirectediianges c5, and the mold-box c is pro- PATENT OFFICE.

portion of which is pivoted a curved arm di,

Patented October 4, 1904.

(No model.)

vided at the bottom with a surrounding flange or rim a6.

The mold-box a is provided with a cover for each of the compartments a2,and these covers are secured, by means of screws b2 or otherwise, to thebottom of a vertically-mov- -able plunger b3, which is mounted betweencorner-guides 5*, secured to the corner portions of the mold-box c.

Within the bottom portion of each of. the compartments c2 is placed avertically-movable follower c, and these followers form movable bottomsfor the said compartments, and secured to the bottoms of said followerscis a yoke-shaped device c2.

The mold-box c in the form of construction shown is secured to anysuitable frame Z by means of screws or bolts d2, and said frame isprovided with an upright member cl3, which is higher than that part ofthe frame to which the mold-box is secured and to the bottom which ispivoted to the yoke c2 at (Z5. Mounted in the top of the upright portionZ3 of the frame is a lever e, one end of which is loosely connected withthe plunger b3 by means of a link c2, and the lever c and arm di areloosely connected by a rod c3, which has a sliding connection with thearm di. The outer end of the lever @is loosely connected, by means of alink 6*, with a vertically-movable piston-rod e5, which passes into acylinder c", supported in a frame e7, provided at the top with acrosshead es, through which the piston-rod e passes. The mold-box (shownin Fig. 3) or the side walls thereof in the separate compartments areprovided with vertically-arranged membersf, the body portions of whichare segmental in cross-section, and the sides thereof adjacent to theside walls of the said compartments are undercut and much narrower thanthe body portions thereof except at the bottom where said sides are ofthe same transverse thickness as the body portion of said members, andthe object of these members is to form lock-recesses in the sides of thebricks or blocks molded in said compartments, as shown and described inthe application hereinbeforc referred to, said recesses being adapted toreceive keys formed on facings applied to such bricks or blocks, allassliown and described in the said application hereinbefore referred to.1n the form of construction shown in Fig. 3 the sides of thecoinpartments a2 are provided with one of the projecting members f, butin Fig. 2 the ends and sides are both provided with these members, thesides being provided with two thereof. The side walls of thecompartments L2 in the mold-box a are also provided withverticallyarranged iibs g, whereby corresponding grooves are formed inthe bricks or blocks cast in said molds, the object of said groovesbeing to provide means to enable cement, plaster', or similar materialto adhere to the bricks or blocks.

he rod e is connected with a piston li, movable in the cylinder c andshown only in dotted lines, and this piston may be operated in themanner of other devices of this class to raise and lower the outer endof the lever c or to operate said lever, and in order to accomplish thisresult steam, air under pressure, or any suitable liquid under pressuremay be employed, or said lever e may be operated in any desired manner.

The operation will be readily understood from the foregoing descriptionwhen taken in connection with the accompanying drawings and thefollowing statement theieof. When the bottom or follower is in theposition shown in full lines in Fig. l and the cover is raised as highas it will go without moving the bottom or follower, the concrete oi'other material from which the bricks or blocks are made may be placed inthe compartments a, and in this operation said compartments are lilledrounding full. The lever e is then operated so as to depress the plungerb into the position shown in Fig. l, and this operation compresses thebricks or blocks in the compartments of the mold and the said bricks orblocks assume the shape or form shown and described in the applicationhereinbefore referred to. The next step of the opei'ation is to raisethe plunger b3, and after said plunger has been raised through a'certain distance the rod @3, operating in connection with the arm d,also raises the followers c, which are connected 4'with the yoke c2 andwhich constitute the bottoms of the mold-compartments, and saidfollowers c are raised to the position shown in dotted lines in Fig. land the bricks or blocks are removed and placed in a kiln to be dried,after which the lever c is again operated to lower the followers c intothe position shown in full lines in Fig. l, and the abovedescribedoperation may be Arepeated as long as desired. It will be observed thatthis operation of the plunger b and the followers c is made possible bymeans of the connection with the arm d", said rod being of the rod e' tprovided in its lower end with a slot y' and designed to be l said armwith a pin f2,

j tit and are adapted to move,

movable in l said slot; but myinvention is not limited to the exactmechanism herein shown and described for operating the mold or molds andthe various parts thereof, and any suitable means or construction may beemployed for this purpose. It will also be observed that the bottoms orfollowers c of the compartments a2 are provided with recesses t, inwhich the members and with other recesses 7:52, in which the ribs g litand are adapted to move.

The molds for making building bricks or blocks described and claimed inthis application are intended for making such building bricks or blocksas are shown and described in another application for Letters Patent ofthe United States filed by me November 11, 1903, Serial No. 180,646.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is i l. A mold-box provided with a compartmentopen at the top and bottom, averticallymovable bottom or follower placedin said compartment, said box being also provided with avertically-movable cover, a wall of said compartment being provided witha vertically-arranged member which extends from the bottom thereofupwardly only a part of the height thereof and the top side portions ofwhich are undercut, said member being adapted to form a recess in abrick or block cast in the mold-box, and said verticallymovable bottomor follower being provided with a recess in which saidvertically-arranged member its and is adapted to move, substantially asshown and described.

2. A mold-box provided with a compartment open at the top and bottom, averticallymovable bottom or follower placed in said compartment, saidbox beingv also provided with a vertically-movable cover, a wall of saidcompartment being provided with a vertically-arranged member whichextends from the bottom thereofl upwardly only a part of the heightthereof and the top side portions of which are undercut, said memberbeing adapted to form a recess in a brick or block cast in the mold-box,said vertically-movable bottoni or follower being provided with a recessin which said vertically-arranged member lits and is adapted to move,and means for raising and lowering the vertically-movable bottom orfollower and for raising and lowering the cover, substantially as shownand described. v

3. A mold-box provided with a plurality of compartments the walls ofwhich are provided with vertically arranged members which do not extendto the top thereof and the top side portions of which are undercut, saidmembers being adapted to form recesses 1n the sides of bricks or blockscast in said box,

IIO

a vertically-movable bottom or follower placed in said compartments andprovided with recesses adapted to receive said members, and avertically-movable cover for said box, substantially as shown anddescribed.

In testimony that I claim the foregoing as my in vention I have signedmy name, in presence of the subscribing Witnesses, this 9th day ofNovember, 1903.

THOMAS WQRRALL.

Witnesses:

F. A. STEWART, C. E. MULREANY.

